Final answer:
It is important to meet the Recommended Dietary Allowance for protein during weight loss to maintain lean tissue, keep calorie count in check due to its 4 kcal/gram energy density, promote satiety to curb hunger, and aid in portion control. The correct option is 1.
Step-by-step explanation:
Meeting the Recommended Dietary Allowance for protein is crucial when trying to lose weight for several reasons. First, proteins are the building blocks for lean tissue in the body, necessary for building, repairing, and maintaining muscles. This is important even during weight loss, as maintaining muscle helps sustain metabolic rate.
Second, because protein provides the same energy density as carbohydrates, which is 4 kcal per gram, this macronutrient can be used efficiently for energy without excessive calorie intake. Third, protein has the ability to create feelings of satiety and reduce hunger, which can naturally lead to reduced calorie intake and facilitate weight loss. Lastly, proteins have a lower energy density compared to fats and hence can aid in portion control.
While protein's role in growth and cellular functions is well-documented, during weight loss specifically, the adequate intake of protein helps maintain essential body functions without compromising muscle mass. This aids in achieving a healthier body composition and supports sustained weight management. Moreover, proteins require more energy for metabolism than carbohydrates, potentially increasing the body's energy expenditure, which contributes to weight loss.